mrjob: Distributed Computing for Everybody. Yelp use MapReduce with Hadoop (running on Amazon’s EMR service) to power all sorts of interesting features on the site, including spelling suggestions, review highlights, top searches and “people who viewed X also viewed...”. mrjob is their new open source Python framework for writing MapReduce jobs against the Hadoop streaming API.
Recent articles
- Highlights from my appearance on the Data Renegades podcast with CL Kao and Dori Wilson - 26th November 2025
- Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult - 24th November 2025
- sqlite-utils 4.0a1 has several (minor) backwards incompatible changes - 24th November 2025